Lock



i March 17, 1931. v J SULUVAN 1,796,490

LOCK

Filed Oct. 14, 1926 aH o-z new Patented Mar. 17, 1931 PATENT OFFICE FRANK J. SULLIVAN, F OSHKOSH, WISCONSIN LOCK Application filed October 14, 1926. Serial No. 141,608.

This invention relates to locks and more particularly to a simple form of lock adapted for use in connection with screen doors, storm doors and the like.

3 An important object of the invention is to provide a simple form of lock which may be secured to a door frame or the like without the use of fastening elements such as nails or screws.

is A further object is to provide a novel form of lock body adapted to be driven into position in a previously formed slot in a door frame and provided with novel means for retaining it in position.

A further object is to provide a lock of the above mentioned character wherein the locking member is formed of a single piece and provided with a trunnion rotatable in an opening formed in the lock body, the latter being adapted to be sprung open a sufficient distance to permit the insertion of the lock member before the device is inserted in position.

A furtl'ler object is to provide a simple form of lock which is adapted to be operated by any suitable implement having a fiat end such as a screw driver or the like.

A further object is to provide a device of the character referred to provided with a locking member adapted to be pivotally carried by a lock body and adapted to engage within a slot provided in the edge of a screen door or the like, the lock body being provided with an integral stop member adapted to limit the movement of the locking member in one direction.

Other objects and advantages of the invention will become apparent during the course of the following description. In the drawings I have shown one embodiment of the invention. In this showing,

Figure l is a fragmentary side elevation of a door frame and a portion of the door showing the device in operative position,

Figure 2 is a section on line 2-2 of Figure 1,

Figure 3 is a similar view on line 33 of Figure 1,

Figure 4 is a perspective view of the lock 50 body and locking member detached, and,

Figure 5 is a detail perspective of the locking member showing the inner face thereof.

Referring to the drawings the numeral 10 designates a door frame provided with an arcuate slot 11 which may be formed in any 35 suitable manner, such as by a circular saw. The frame is further provided in one face with a circular opening 12 communicating with the slot 11 for a purpose to be described.

A door 13 is associated with the frame in the KZ-IF usual manner, and this door may be the usual type of screen door provided with screen wire 14. The door is provided with an arcuate slot 15 which also may be formed by a circular saw and the slots 11 and 15 are arranged substantially in a common plane when the door 13 is closed.

Referring to Figure 4 of the drawings, the numeral 16 designates a lock body as a whole preferably formed of stamped sheet metal. 13 The body 16 is preferably U-shaped, being provided with arms or side plates 17 and 18. The plate 18 is preferably provided at its forward edge with an outturned flange 19 and the metal of the plate 18 at its upper and lower edges, is punched and stamped out wardly to form teeth 20 for a purpose to be described. The plate 18 is further provided substantially centrally thereof with a circular opening 21 and is further provided with $5?) a punched out portion 22 forming a stop for the locking member to be described.

The locking member is indicated by the numeral 23 in Figure t of the drawings, and this member is preferably formed of rela- 53 tively heavy flat metal. stock having parallel upper and lower edges 24 and curved ends In forming the finished locking member, the blank is placed in a suitable die and punched from one face thereof to form a depression 26, the die leaving the side portions 27 of the depression undisturbed. It will be apparent that the opposite face of the'blank will be stamped outwardly as at 28 to form an integral trunnion which is adapted to revolve in the opening 21. The stamped out portion of the locking member is provided with a relatively large straight slot 29 to receive the end of a screwdriver or the like. Then the device is assembled the trunnion 28 is arranged in alincment with the circular opening 12, and this opening is preferably provided with a ferrule 30.

The operation of the device is as follows:

The locking member 23 is inserted in the lock body by springing the side plates 17 and 18 thereof outwardly. The locking member is then pushed into position, and the trunnion 28 snaps into the opening 21. The locking member is then swung to a vertical position, whereupon the lock body is driven into the slot 11 by a hammer or the like, the flange 19 contacting with the inner face of the door frame. It is to be noted that the teeth 20 are 1 slanting 011 one side and straight on the other side, similar to a rip saw. The wood of the door frame into which the lock body is driven, has the grain running crosswise of teeth 20. By having the teeth arranged in this particular manner, when driving the lock into place they do not cut the wood but instead, slide over it. However, if it is attempted to remove the lock body from its position in the slot, the teeth will at once grip into the grain of the wood because of their shape and hold very fast. The lock readily may be operated stated, by inserting a screw driver cr like implement into the slot 29 to rotate it to vertical or horizontal positions. \Vhen the locking member is in a horizontal position it contacts with and is supported by the lug or stamped out member 22, as will be apparent. The device is extremely simple in construction and does not require the use of nails or other fastening elements for securing it in position, and readily may be operated to look a screen door to prevent it from blowing open.

It will be noted that the edge of the screen door may be provided with the slot 15, no hardware being necessary to the operation of the device. The screen doors therefore may be shipped in the usual manner by placing one on top of another, and no projecting hardware is employed which may scratch or otherwise mar the adjacent doors. The device also does not require any projecting elements secured to the door frame, and the only portion of the device which will be visible is a small ferrule 30.

It is to be understood that the form of the invention herewith shown and described is to betakeu as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spiritof the in- 'ention or the scope of the subjoined claim.

1 claim:

A device of the character described compr si g s li nt leek dy fa med u tea tia lly u shaped to provide spaced parallel side plates, one of said sides being provided w t a cu a op n a lacki membe fo med of el ti ely flat ma e ia r ang between side plates, the hickness of said member being substantially equal to the width of the space between said plates, said locking member being stamped on one side to provide a circular boss on its opposite side, said boss being rotatable in said opening, said locking member extending substantially beyond the side plates when in one position, one of said plates being provided at its upper and lower edges with a plurality of integral transversely extending teeth, said last named plate being provided at its free edge with a vertical laterally extending flange adapted to limit the insertion of said lock body in a door slot, and a stop on said lock body adapted to limit movement of said locking member.

In testimony whereof I affix my signature.

FRANK J. SULLIVAN. 

